#VU103678 Improper error handling in Cisco IOS XR - CVE-2025-20172
Published: February 6, 2025 / Updated: May 2, 2025
Vulnerability identifier: #VU103678
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-20172
CWE-ID: CWE-388
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Cisco IOS XR
Cisco IOS XR
Software vendor:
Cisco Systems, Inc
Cisco Systems, Inc
Description
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper error handling in the SNMP subsystem. A remote authenticated user can send specially crafted SNMP versions 1, 2c, or 3 requests to the affected system and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.
External links
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snmp-dos-sdxnSUcW
- https://www.zerodayinitiative.com/advisories/ZDI-25-271/
- https://www.zerodayinitiative.com/advisories/ZDI-25-272/
- https://www.zerodayinitiative.com/advisories/ZDI-25-274/
- https://www.zerodayinitiative.com/advisories/ZDI-25-273/